On the other hand, pathway analysis using miRNAs that were downregulated in sarcoidosis compared to unclassified uveitis with vitreous opacity controls suggested that a total of 32 pathways including “TGF-β signaling pathway” and “Thyroid hormone signaling pathway” were associated with sarcoidosis by gene union analysis (Fig. 3c). Here, TGFB1 is linked to uveitis.